<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>函数</title>
  </head>
  <body>
    <script>
      // 需求：求 1 - 100 累加和
      function getSum(num1, num2) {
        var sum = 0;
        for (var i = num1; i <= num2; i++) {
          sum += i;
        }
        return sum;
      }
      console.log('累加和--', getSum(1, 100));

      // arguments 对象
      function fun() {
        return arguments;
      }
      var res = fun('red', 'green', 'blue');
      console.log('arguments--', Array.from(res));
    </script>
  </body>
</html>
